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Classical Physics

- Principles developed before the rise of relativity and quantum mechanics. Mechanics, Electrodynamics, Thermodynamics, Optics...
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Jan16-12 Greg Bernhardt
Before posting anything, please review the Physics Forums Global Guidelines. Again, for some odd reason, people...
Apr22-11 05:26 AM
ZapperZ
1 47,870
so einstein is a genius of all genius. In his derivation of E=mc^2 he used the analogy of a box being in space not...
Jun13-08 09:27 AM
cmos
11 1,442
Hello Guys As Electricity power supply Mechanical Engineer Entropy is a reality we battle with every moment. Is...
Jun12-08 09:18 PM
Euclid
3 1,325
Let's assume that we have a straight current-carrying wire, along the z axis of the cartesian (or cylindrical)...
Jun12-08 04:13 PM
Littlepig
5 2,132
Hi I've working on a computer program where I need to calculate some electric fields. I am referring to a thesis...
Jun12-08 03:54 PM
broli86
2 6,576
hi there. one question arrise from a discussion in our lunch!?: is the universe neutral?? that means; is the universe...
Jun12-08 03:32 PM
Littlepig
0 1,370
Hi, I was thinking about the graviton ride at amusement parks - the one that sort of simulates the feeling of gravity...
Jun12-08 02:51 PM
russ_watters
2 1,864
Say I have the following simple situation || || ||---/\/\/\---m1---/\/\/\----m2...
Jun12-08 01:33 PM
JohnSimpson
2 1,847
A satellite is in a particular orbit. Too put it in a higher orbit(greater distance from earth), we increase its...
Jun12-08 01:17 PM
rcgldr
9 1,851
do sound waves carry momentum? any momentum at all (no matter how small)? the obvious answer is that they carry...
Jun12-08 07:22 AM
shamrock5585
10 5,709
Hi all. I was thinking of something: Bound charges in an insulator arise because of the polarisation, so even...
Jun11-08 10:57 AM
Niles
2 2,669
How would you find voltage difference between two surfaces? If you are given a capacitor with an internal electric...
Jun11-08 10:04 AM
cmos
1 1,555
hello every body, i am trying to understand the capacitor behavior as deeply as i can ... consider a simple...
Jun10-08 03:45 PM
armis
3 1,810
Is it true that we can consider a spherical wave in the far field (i.e. away from antenna, at a large distance) as a...
Jun10-08 11:21 AM
HallsofIvy
1 3,928
Hi there. I got two questions for you: 1- How can I calculate the force of attraction in Newton of two bar magnets...
Jun10-08 07:56 AM
noneya44
2 7,748
In physics, we learned about friction between one object sliding across another, but when we got to torque and angular...
Jun10-08 12:00 AM
Telanor
3 3,273
for my lab we built an am radio, with a breadboard, variable capacitor, capacitors, antenna, ground, headphone,...
Jun9-08 10:40 PM
proton
0 1,509
I have a question about the Poynting vector: mit.edu/8.02t/www/materials/StudyGuide/guide13.pdf (page 44/51) ...
Jun9-08 03:41 AM
Domenicaccio
2 3,994
If a mass became pulled up from Earth, its U increases and its K decreases, but if it became pulled into space, its U...
Jun7-08 12:29 PM
Ignition
3 1,272
Hello!I would like to ask about Electromagnetic induction in transformer.As we learn that an alternating voltage is...
Jun6-08 08:00 PM
ws0619
5 1,837
It is often claimed that in a hot climate, it is better to paint one's house white because it will reflect more...
Jun6-08 09:30 AM
DaveC426913
8 2,446
I've seen two references to magnetic charge density as something that Dirac said would explain charge quantization. ...
Jun6-08 08:55 AM
Peeter
2 1,697
What is the difference between Simple Harmonic Motion and Harmonic Motion ? and How do we define the motion of a...
Jun6-08 03:46 AM
linuxpie
4 1,122
I want to create a little board with 20 LEDs. My only problem is wiring them, I want to make a parallel circuit. I was...
Jun6-08 12:16 AM
noagname
0 1,180
Hi I have a problem I'm trying to figure out, but no idea where to start. Essentially I am trying to calculate the...
Jun5-08 12:45 PM
RTW69
4 2,073
Would a harmonic of the Larmor frequency have any effect on proton precession?
Jun5-08 12:29 PM
rj_duff
2 1,577
Hi, When you have interference in thin films, why does the film has to be thin? Why doesn't it work with "thick"...
Jun4-08 07:45 AM
yoran
2 3,274
I have a couple of questions about single slit diffraction. It's not a homework exercise - just a conceptual problem....
Jun4-08 07:40 AM
Andy Resnick
1 2,483
Hello I'm a computer science student trying to write a software in C for calculating the radar cross section of...
Jun4-08 04:31 AM
broli00
0 1,720
Hello! I have a problem - a non-physics student has asked: "Why do I see my face upside down on one side of a...
Jun4-08 02:32 AM
ws0619
5 6,159
Can two magnets produce a magnetic field strong than the simple vector sum of their individual fields when near each...
Jun4-08 01:37 AM
ws0619
1 2,772
Unfortunately, magnetic fields are by their nature invisible, but scientists from NASA’s Space Sciences Laboratory...
Jun3-08 11:37 PM
SF
2 1,558
What limits the length of a snorkel? Our chest muscles strenth? If they are strong enough will we be able to swim...
Jun3-08 03:47 PM
tonyh
4 1,470
the idea is , if we have the magnetic field strength (H) and magnetic flux density (B) so we represent the 'hysteresis...
Jun3-08 12:07 PM
pam
1 2,038
If I describe a system by a Lagrange's function L=-\frac{1}{2}\int...
Jun3-08 10:02 AM
jostpuur
4 3,619
First of all, sorry for my poor english I am studying classical mechanics and have a problem with angular momentum. I...
Jun3-08 09:37 AM
tiny-tim
2 918
I found somewhere that the time needed for vibrations of the radiation corresponding to the transition between the...
Jun3-08 05:49 AM
SpaceExplorer
0 1,106
Hi, In one part in my book they define the magnetic moment of a closed loop of current. They define it as...
Jun2-08 08:06 AM
yoran
7 2,984
To create a solenoid, conductive wire is coiled with n # of turns per unit length. To create a real solenoid can each...
Jun2-08 07:42 AM
benabean
2 2,763
Hi, When you charge a capacitor in an RC-circuit, the charge q in the capacitor is given by q(t)=\epsilon...
May31-08 11:21 PM
pzlded
7 2,850
Point charges w/velocity have a magnetic field. How does an uncharged capacitor slow the point charges to zero...
May31-08 05:10 PM
pzlded
3 1,998

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